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Upper limit for gamma-ray emission above 140 GeV from the dwarf spheroidal galaxy Draco

Albert J
•
Aliu E
•
Anderhub H
altro
DE LOTTO, Barbara
2008
  • journal article

Periodico
THE ASTROPHYSICAL JOURNAL
Abstract
The nearby dwarf spheroidal galaxy Draco, with its high mass to light ratio, is one of the most auspicious targets for indirect dark matter (DM) searches. Annihilation of hypothetical DM particles can result in high-energy gamma-rays, e. g., from neutralino annihilation in the supersymmetric framework. A search for a possible DM signal originating from Draco was performed with the MAGIC telescope during 2007. Analysis of the data results in a flux upper limit (2 sigma) of 1.1 x 10(-11) photons cm(-2) s(-1) for photon energies above 140 GeV, assuming a pointlike source. A comparison with predictions from supersymmetric models is also given. While our results do not constrain the mSUGRA phase parameter space, a very high flux enhancement can be ruled out.
DOI
10.1086/529135
WOS
WOS:000255818600031
Archivio
http://hdl.handle.net/11390/879299
info:eu-repo/semantics/altIdentifier/scopus/2-s2.0-43949145902
Diritti
metadata only access
Scopus© citazioni
82
Data di acquisizione
Jun 7, 2022
Vedi dettagli
Web of Science© citazioni
65
Data di acquisizione
Mar 27, 2024
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